CVE-2018-0154

HIGHNVD 7.59.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-03-03), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.5 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
7.5
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 7%CVSS: 7.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A vulnerability in the crypto engine of the Cisco Integrated Services Module for VPN (ISM-VPN) running Cisco IOS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient handling of VPN traffic by the affected device. An attacker could exploit this vulnerability by sending crafted VPN traffic to an affected device. A successful exploit could allow the attacker to cause the affected device to hang or crash, resulting in a DoS condition. Cisco Bug IDs: CSCvd39267.

CVSS v3
7.5
EG Score
9.0(high)
EPSS
93.6%
KEV
⚠ Exploited

Published

March 28, 2018

Last Modified

January 13, 2026

Advisory Details (4)

Auto-updated Jun 5, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0154
generic🔴 Active Exploitation

Cisco IOS Software Integrated Services Module for VPN Denial of Service Vulnerability

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dos
generic
http://www.securitytracker.com/id/1040585
generic
http://www.securityfocus.com/bid/103559

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 92× in last 7d / 388× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 554 total refreshes for this CVE.

  1. 2026-07-11 20:29 UTCEG score recompute
  2. 2026-07-11 20:29 UTCGHSA enrichment
  3. 2026-07-11 16:17 UTCEG score recompute
  4. 2026-07-11 16:17 UTCGHSA enrichment
  5. 2026-07-11 12:05 UTCEG score recompute
  6. 2026-07-11 12:05 UTCGHSA enrichment
  7. 2026-07-11 08:24 UTCEPSS rescore
  8. 2026-07-11 07:54 UTCEG score recompute
  9. 2026-07-11 07:54 UTCGHSA enrichment
  10. 2026-07-11 03:42 UTCEG score recompute
  11. 2026-07-11 03:42 UTCGHSA enrichment
  12. 2026-07-10 23:30 UTCEG score recompute
  13. 2026-07-10 23:30 UTCGHSA enrichment
  14. 2026-07-10 19:18 UTCEG score recompute
  15. 2026-07-10 19:18 UTCGHSA enrichment
  16. 2026-07-10 17:52 UTCCISA KEV update
  17. 2026-07-10 15:06 UTCEG score recompute
  18. 2026-07-10 15:06 UTCGHSA enrichment
  19. 2026-07-10 10:53 UTCEG score recompute
  20. 2026-07-10 10:52 UTCGHSA enrichment
  21. 2026-07-10 06:38 UTCEG score recompute
  22. 2026-07-10 06:38 UTCGHSA enrichment
  23. 2026-07-10 02:27 UTCEG score recompute
  24. 2026-07-10 02:26 UTCGHSA enrichment
  25. 2026-07-09 22:14 UTCEG score recompute
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  1. 2026-07-09 22:14 UTCGHSA enrichment
  2. 2026-07-09 19:06 UTCEPSS rescore
  3. 2026-07-09 18:02 UTCEG score recompute
  4. 2026-07-09 18:02 UTCGHSA enrichment
  5. 2026-07-09 13:50 UTCEG score recompute
  6. 2026-07-09 13:49 UTCGHSA enrichment
  7. 2026-07-09 09:38 UTCEG score recompute
  8. 2026-07-09 09:38 UTCGHSA enrichment
  9. 2026-07-09 05:25 UTCEG score recompute
  10. 2026-07-09 05:25 UTCGHSA enrichment
  11. 2026-07-09 01:14 UTCEG score recompute
  12. 2026-07-09 01:13 UTCGHSA enrichment
  13. 2026-07-08 21:02 UTCEG score recompute
  14. 2026-07-08 21:02 UTCGHSA enrichment
  15. 2026-07-08 16:50 UTCEG score recompute
  16. 2026-07-08 16:50 UTCGHSA enrichment
  17. 2026-07-08 15:11 UTCEPSS rescore
  18. 2026-07-08 12:38 UTCEG score recompute
  19. 2026-07-08 12:38 UTCGHSA enrichment
  20. 2026-07-08 08:25 UTCEG score recompute
  21. 2026-07-08 08:25 UTCGHSA enrichment
  22. 2026-07-08 04:14 UTCEG score recompute
  23. 2026-07-08 04:14 UTCGHSA enrichment
  24. 2026-07-08 00:01 UTCEG score recompute
  25. 2026-07-08 00:00 UTCGHSA enrichment
  26. 2026-07-07 19:49 UTCEG score recompute
  27. 2026-07-07 19:49 UTCGHSA enrichment
  28. 2026-07-07 19:01 UTCCISA KEV update
  29. 2026-07-07 17:16 UTCCISA KEV update
  30. 2026-07-07 15:37 UTCEG score recompute
  31. 2026-07-07 15:36 UTCGHSA enrichment
  32. 2026-07-07 13:42 UTCEPSS rescore
  33. 2026-07-07 11:25 UTCEG score recompute
  34. 2026-07-07 11:25 UTCGHSA enrichment
  35. 2026-07-07 07:13 UTCEG score recompute
  36. 2026-07-07 07:13 UTCGHSA enrichment
  37. 2026-07-07 03:00 UTCEG score recompute
  38. 2026-07-07 03:00 UTCGHSA enrichment
  39. 2026-07-06 22:49 UTCEG score recompute
  40. 2026-07-06 22:49 UTCGHSA enrichment
  41. 2026-07-06 18:37 UTCEG score recompute
  42. 2026-07-06 18:37 UTCGHSA enrichment
  43. 2026-07-06 16:24 UTCEPSS rescore
  44. 2026-07-06 16:24 UTCEPSS rescore
  45. 2026-07-06 14:24 UTCEG score recompute
  46. 2026-07-06 14:24 UTCGHSA enrichment
  47. 2026-07-06 10:11 UTCEG score recompute
  48. 2026-07-06 10:10 UTCGHSA enrichment
  49. 2026-07-06 05:57 UTCEG score recompute
  50. 2026-07-06 05:57 UTCGHSA enrichment
  51. 2026-07-06 02:20 UTCEPSS rescore
  52. 2026-07-06 02:20 UTCEPSS rescore
  53. 2026-07-06 01:43 UTCEG score recompute
  54. 2026-07-06 01:43 UTCGHSA enrichment
  55. 2026-07-05 21:31 UTCEG score recompute
  56. 2026-07-05 21:31 UTCGHSA enrichment
  57. 2026-07-05 17:20 UTCEG score recompute
  58. 2026-07-05 17:20 UTCGHSA enrichment
  59. 2026-07-05 13:08 UTCEG score recompute
  60. 2026-07-05 13:08 UTCGHSA enrichment
  61. 2026-07-05 08:57 UTCEG score recompute
  62. 2026-07-05 08:56 UTCGHSA enrichment
  63. 2026-07-05 04:44 UTCEG score recompute
  64. 2026-07-05 04:44 UTCGHSA enrichment
  65. 2026-07-05 02:27 UTCEPSS rescore
  66. 2026-07-05 00:31 UTCEG score recompute
  67. 2026-07-05 00:31 UTCGHSA enrichment
  68. 2026-07-04 20:19 UTCEG score recompute
  69. 2026-07-04 20:19 UTCGHSA enrichment
  70. 2026-07-04 16:07 UTCEG score recompute
  71. 2026-07-04 16:07 UTCGHSA enrichment
  72. 2026-07-04 11:54 UTCEG score recompute
  73. 2026-07-04 11:54 UTCGHSA enrichment
  74. 2026-07-04 07:42 UTCEG score recompute
  75. 2026-07-04 07:42 UTCGHSA enrichment

Frequently asked(6)

What is CVE-2018-0154?
CVE-2018-0154 is a high vulnerability published on March 28, 2018. A vulnerability in the crypto engine of the Cisco Integrated Services Module for VPN (ISM-VPN) running Cisco IOS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient handling of VPN…
When was CVE-2018-0154 disclosed?
CVE-2018-0154 was first published in the National Vulnerability Database on March 28, 2018, with the most recent update on January 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-0154 actively exploited?
Yes. CISA added CVE-2018-0154 to the Known Exploited Vulnerabilities catalog on March 3, 2022, affecting Cisco IOS Software. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2018-0154?
CVE-2018-0154 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2018-0154?
CVE-2018-0154 affects Cisco IOS Software. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2018-0154?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-0154, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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